Update CHANGELOG.md

Author: NoelStephensUnity

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -15,6 +15,7 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ### Fixed
 
+- Fixed issue with the in-scene network prefab instance update menu tool where it was not properly updating scenes when invoked on the root prefab instance. (#3084)
 - Fixed issue where `NetworkAnimator` would send updates to non-observer clients. (#3058)
 - Fixed issue where an exception could occur when receiving a universal RPC for a `NetworkObject` that has been despawned. (#3055)
 - Fixed issue where setting a prefab hash value during connection approval but not having a player prefab assigned could cause an exception when spawning a player. (#3046)